Roof Repair business. Not afraid of heights? Help homeowners fix their roofs. Business Overview The prerequisite for selling roof-repair services is obvious; you need to know how to repair all or most types of roofing'asphalt, cedar, tile, steel, torch-on, and tar and gravel. Although this may sound like a major requirement, in fact it is not. Just about anyone with basic carpentry and construction skills can quickly learn how to repair roofs. You will, however, need proper...